column
2020, 57(2): 243-256.
DOI: 10.7544/issn1000-1239.2020.20190524
2020, 57(2): 257-268.
DOI: 10.7544/issn1000-1239.2020.20190526
2020, 57(2): 269-280.
DOI: 10.7544/issn1000-1239.2020.20190543
2020, 57(2): 281-290.
DOI: 10.7544/issn1000-1239.2020.20190574
2020, 57(2): 318-332.
DOI: 10.7544/issn1000-1239.2020.20190563
2020, 57(2): 333-345.
DOI: 10.7544/issn1000-1239.2020.20190565
2020, 57(2): 346-362.
DOI: 10.7544/issn1000-1239.2020.20190455
2020, 57(2): 363-377.
DOI: 10.7544/issn1000-1239.2020.20190018
2020, 57(2): 378-394.
DOI: 10.7544/issn1000-1239.2020.20190104
2020, 57(2): 395-412.
DOI: 10.7544/issn1000-1239.2020.20190092
2020, 57(2): 424-432.
DOI: 10.7544/issn1000-1239.2020.20190281
2020, 57(2): 447-458.
DOI: 10.7544/issn1000-1239.2020.20190279